Centroid moment tensor solutions for Taiwan earthquakes of the WWSSN era (1963-1975)

Po Fei Chen*, Göran Ekström, Emile A. Okal

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

3 Scopus citations

Abstract

We use analog seismograms to invert seventeen new centroid moment tensor solutions for shallow earthquakes in the vicinity of Taiwan during the period 1963-1975, with the exact same algorithm used to produce the Harvard catalog for modern events recorded on digital seismographs. The average rate of moment release featured by the 17 events is double that of the modern seismicity of the study area, as expressed in the Harvard catalog, and if the 1999 Chi-chi earthquake and its aftershocks are discarded. Significant deviations in geometry are found between some of our solutions and focal mechanisms previously obtained for the same events by a variety of authors. Our study provides a more complete dataset of focal solutions in Taiwan for future analysis of the regional tectonic strain release.

Original languageEnglish (US)
Pages (from-to)61-73
Number of pages13
JournalTerrestrial, Atmospheric and Oceanic Sciences
Volume15
Issue number1
DOIs
StatePublished - Mar 2004

Keywords

  • Harvard CMT catalog
  • Taiwan earthquakes
  • WWSSN

ASJC Scopus subject areas

  • Oceanography
  • Atmospheric Science
  • Earth and Planetary Sciences (miscellaneous)

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